Valves for hydrogen pipelines
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I have a few questions for everyone: The \"Code for Design of Hydrogen Stations\" GB50177-2005 specifies that valves for hydrogen pipelines should preferably be globe valves or ball valves. 1. Can gate valves be used on hydrogen pipelines? What conditions must be met to use a gate valve? 2. What is the standard number for globe valves used in hydrogen pipelines according to American standards? What is the standard number for the accompanying flange? 3. What are the materials used for various components of a valve when the design pressure is greater than 2.5 MPa? Thank you!
This question touches on many technical aspects. There is no standard that prohibits the use of gate valves; it depends on what kind of gate valve is used. Generally, globe valves are preferred. There’s nothing to prevent their use – they can be employed when the pipe diameter is small and the pressure is not high. As for the American standard codes, I’m not sure about that either
Hehe, as long as nothing leaks, it can be used. It’s difficult to ensure a leak-free seal using a gate valve at a pressure of 2.5 Mpa, right? It is recommended to look for various valves designed specifically for hydrogen online; as long as the pressure, temperature, and medium specifications indicated on the valve labels meet your requirements, it can be used. It’s best not to argue with the ‘Standards’; one must follow the rules, otherwise no one can take responsibility for it. For reference.
A gate valve with such a simple structure is not suitable for use with hydrogen.